Negan is definitely gonna become a part of the group and take Rick's spot

You’re a DOLT, and you should off yourself

This has been kicked around a lot and it definitely does look like they're heading in that direction.

I know some people will say that Rick has done bad things and everyone else has done bad things and probably the worst (and stupidest) move they ever did was to murder Negan's outpost in cold blood as an offensive maneuver to get rid of what they thought was an army of Negan's.
But nobody enjoyed it and they already knew this was a band of people that regularly killed people for their supplies. What they didn't know was the multitude of them. So it was dumb as much as it was wrong.

Otherwise there's been psychotic behavior and signs of PTSD of many of Ricks crew which seems almost normal considering the circumstances.

But Negan's behavior has been cold and calculated and never out of control. He seemed to enjoy slaughtering people in front of their loved ones or for effect...he has tortured and maimed and terrorized with great relish and has extorted women to be with him for the lives of their husbands.

There's no coming back from that. People don't just recover from being a sociopath.

If they had it in the cards to redeem Negan at some point they shouldn't have made him such a stone cold tyrant that laughs at peoples misery.

I'm a firm believer in redemption but don't paint somebody as beyond that ability and then try to take it back.
There's going to be a lot of people, like myself, that will never accept Negan's redemption and it makes the writers seem limited to think they can make that work.

I don't know why the OP is getting criticism for what will likely happen according to the comics. Judith replaced Carl and there's no Rick so someone will need to be the new leader unless the show runner throws us another curve ball.

Rick never completely trusts Negan in the comics. There are a couple situations where Rick or Dwight only lets Negan help because if he didn't, they were all dead anyway. Although he does make a good case that he is truly changed. Basically everything he does after getting captured is ultimately about gaining Rick's trust. And there is a moment where they both thought they were gonna die, Negan breaks down and explains to Rick his reasoning for why he had to be this way, then admits it was wrong. Even after that, Rick does not allow him to live with the group at Alexandria.

If they stick with this on the show, it would be Daryl and maybe Michonne instead of Rick, and give JDM an out after season 10.

That's why I have stopped watching. I always said " when Andy goes, I will go".